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High-precision electromagnetic combined measurement method and negative hydrogen cyclotron based on method

A technology of cyclotron and measurement method, which is applied in the direction of magnetic resonance accelerator, electrostatic field measurement, electromagnetic field characteristics, etc., and can solve problems such as effect discount

Active Publication Date: 2020-12-18
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The problems existing in the measurement and beam loss control related to the existing cyclotron technology are: firstly, it only measures the electric field variable or magnetic field variable of any process or the current process or the electromagnetic components of the discrete components for the beam loss control problem of a single process ,: For example, or the problem of measuring the beam acceleration process, or the problem of measuring the beam extraction process, but even if the beam loss problem of these two processes is solved, because the first three processes have an impact on the current process, and the first three The causes of the beam loss caused by each process are independent, even if the beam loss problem in the current beam acceleration process is solved, the effect of the solution will be greatly reduced; secondly, only one factor corresponds to the beam loss of a process Control and electromagnetic measurement problems, but the actual situation is that one factor will have an impact on multiple processes. If the impact of the current factor on the current process is only measured and the impact of the current factor on other processes is not measured, then other processes are caused by the same factors. The beam loss of the current process will also affect the current process; thirdly, only one process corresponds to one factor to measure the beam loss problem, but the factors that cause the beam loss of the current process often come from multiple factors in the accelerator. factors, or exist in many different physical locations of the accelerator, if not all factors affecting the current process beam loss or all material flow positions are measured in place, the measurement of the current process beam loss is only a fraction

Method used

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  • High-precision electromagnetic combined measurement method and negative hydrogen cyclotron based on method
  • High-precision electromagnetic combined measurement method and negative hydrogen cyclotron based on method
  • High-precision electromagnetic combined measurement method and negative hydrogen cyclotron based on method

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Effect test

Embodiment 1

[0149] Example 1 (eg figure 2 , image 3 , Figure 4 , Figure 5 shown): In this link, the advanced laser tracker detection equipment is used to measure the axis of the main magnet and the ion source injection line 11 coaxially, and the coaxial deviation does not exceed 0.1mm; the advanced laser tracker detection equipment is used to measure the center of the main magnet The coincidence measurement of the center of the central area 6 is carried out, and the deviation is not greater than 0.1 mm. The distribution of the magnetic field is measured by a Hall effect device, and the uniformity and symmetry of the magnetic field are measured.

[0150] the link The measurement of the beam current matching degree between the central area and the ion source injection line in 6D phase space is as follows:

[0151] 1) The high-brightness negative hydrogen ion beam generated by the strong current negative hydrogen ion source is matched with the high-frequency beamformer in the longitu...

Embodiment 2

[0155] Example 2 (eg figure 2 , image 3 , Figure 5shown): In this link, the measurement of the 6D phase space beam matching degree between the central area 6 and the ion source injection line 11 is completed by the inner target installed at the small radius of the cyclotron to test the beam current intensity. , the beam inner target is installed at the position where the cyclotron beam is transmitted and injected and the energy is accelerated to 1MeV. The details are as follows: 1) The high-brightness negative hydrogen ion beam generated by the high-brightness negative hydrogen ion source paired with the strong current negative hydrogen ion source in the cyclotron beam is used for matching measurement with the high-frequency beam buncher 11-3 in the longitudinal phase space. The high-frequency frequency of the cyclotron must be strictly consistent with the high-frequency frequency of the cyclotron, and then the high voltage of the buncher is measured by the high-voltage pr...

Embodiment 3

[0160] Example 3 (as figure 2 , image 3 , Figure 5 Shown): In this link, the measurement of the matching degree between the magnetic field distribution in the central area and the electrode structure in the central area is achieved through the measurement of the electrode structure in the central area and the components of the magnetic focusing structure, the combination of each other, and the measurement of the electromagnetic field characteristics in the central area. Through the measurement of the machining accuracy of the electrode structure and magnetic focus structure components in the central area and the final combination of the relative position installation accuracy measurement, the measurement of the electromagnetic field characteristics of the central area related to the measurement of the high-frequency voltage and magnetic field installed at the head of the central area 6 Providing a measurement of sufficiently strong axial focus, the axial oscillation amplitu...

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Abstract

The invention discloses a high-precision electromagnetic combined measurement method and a negative hydrogen cyclotron based on the method, and belongs to the technical field of high-current proton cyclotron electromagnetic field characteristic and electric field distribution measurement. The measurement method comprises the following steps: measuring a strong-current negative hydrogen ion beam generation process; measuring a high-current negative hydrogen ion beam transmission process; measuring a high-current negative hydrogen ion beam injection process; measuring a high-current negative hydrogen ion beam acceleration process; and measuring a high-current negative hydrogen ion beam extraction process; The invention further discloses the compact high-average-flow-intensity negative hydrogen cyclotron based on the high-precision electromagnetic combined measurement method; the measurement method runs through the whole process of generation, transmission, strong injection, accelerationand extraction of strong-flow negative hydrogen ions; through the cooperation technology of all links of installation, combination and debugging in the overall integration process of a main magnet assembly, a high-frequency subsystem, an injection and extraction subsystem, a double-layer sealed vacuum chamber and other systems, the problem of beam loss in all links of beam injection, accelerationand extraction is solved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic field characteristics and electric field distribution measurement of a high-current proton cyclotron, and specifically relates to a high-precision electromagnetic combined measurement method and a negative hydrogen cyclotron based on the method. Background technique [0002] The compact high average flow negative hydrogen cyclotron means that the accelerated ion species is negative hydrogen (H - ) continuous wave isochronous compact cyclotron, the final average beam current intensity drawn from the accelerator is above 200μA. The compact high-average negative hydrogen cyclotron can produce high-current proton beams, high-flux neutrons and radioactive nuclear beams (RIB) for national defense nuclear technology, nuclear physics foundation and nuclear technology application research, such as nuclear Data measurement, radiation physics, neutron physics, nuclear structure, material science and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08G01R29/14H05H7/04H05H13/00
CPCG01R29/08G01R29/14H05H7/04H05H13/005
Inventor 张天爵吕银龙安世忠殷治国纪彬贾先禄魏素敏葛涛姚红娟邢建升管锋平宋国芳潘高峰樊明武
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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